favouridowu02/drawos

DrawOS is a free, open source drawing tool that runs entirely inside your web browser, with no account, server, or internet connection required to use it. It lets you sketch shapes, add editable text, and place images on an unlimited canvas that you can freely pan and zoom around, similar in spirit to design tools like Figma but focused purely on local, offline drawing. The tool includes rectangle, circle, and freehand path drawing, along with a layer panel similar to the one found in professional design software, letting you reorder, hide, or lock individual layers and instantly zoom to frame any one of them. It supports snapping your shapes to a configurable grid, and shows live measurements on the canvas as you work. Everything you draw is saved automatically inside your browser's own storage, so your work persists between sessions without needing an account or cloud service. A command palette, opened with Ctrl+K, along with dedicated keyboard shortcuts for each tool, lets you work quickly without reaching for the mouse. Built in flowchart and wireframe templates give you a starting point instead of a blank canvas. To run it yourself, you need Node.js version 18 or higher. After cloning the repository, you install dependencies, then start a local development server to open the editor in your browser, or build an optimized production version. Internally, the project is organized as a set of separate packages: one for geometry and shape calculations, one for undo and redo history, one for the drawing engine itself, one for rendering shapes to the screen, one for saving your work locally, and one for the interactive tools. The project is released under the MIT license and welcomes outside contributions through GitHub issues and pull requests.